Home / 145,657,420.48-218,517,623.52-77,490,205.12

Finding the Fourth Proportional to 145,657,420.48, 218,517,623.52 and 77,490,205.12

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Solution

The fourth proportional to 145,657,420.48, 218,517,623.52 and 77,490,205.12 is: 116,252,061.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,657,420.48 : 218,517,623.52 = 77,490,205.12 : x
  2. Step 2: Convert to fraction form
    145,657,420.48/218,517,623.52 = 77,490,205.12/x
  3. Step 3: Cross multiply
    145,657,420.48x = 218,517,623.52 × 77,490,205.12
  4. Step 4: Simplify right side
    145,657,420.48x = 16,932,975,468,899,738
  5. Step 5: Solve for x
    x = 16,932,975,468,899,738/145,657,420.48
  6. Step 6: Final answer
    x = 116,252,061.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.