Home / 105,102.30-157,423.05-91,278.30

Finding the Fourth Proportional to 105,102.30, 157,423.05 and 91,278.30

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Solution

The fourth proportional to 105,102.30, 157,423.05 and 91,278.30 is: 136,717.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,102.30 : 157,423.05 = 91,278.30 : x
  2. Step 2: Convert to fraction form
    105,102.30/157,423.05 = 91,278.30/x
  3. Step 3: Cross multiply
    105,102.30x = 157,423.05 × 91,278.30
  4. Step 4: Simplify right side
    105,102.30x = 14,369,308,384.82
  5. Step 5: Solve for x
    x = 14,369,308,384.82/105,102.30
  6. Step 6: Final answer
    x = 136,717.35

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1.5x scale

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.