Home / 99,446.09-137,200.98-56,420.51

Finding the Fourth Proportional to 99,446.09, 137,200.98 and 56,420.51

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Solution

The fourth proportional to 99,446.09, 137,200.98 and 56,420.51 is: 77,840.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,446.09 : 137,200.98 = 56,420.51 : x
  2. Step 2: Convert to fraction form
    99,446.09/137,200.98 = 56,420.51/x
  3. Step 3: Cross multiply
    99,446.09x = 137,200.98 × 56,420.51
  4. Step 4: Simplify right side
    99,446.09x = 7,740,949,264.10
  5. Step 5: Solve for x
    x = 7,740,949,264.10/99,446.09
  6. Step 6: Final answer
    x = 77,840.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.