Home / 130,649.76-180,275.02-76,915.17

Finding the Fourth Proportional to 130,649.76, 180,275.02 and 76,915.17

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Solution

The fourth proportional to 130,649.76, 180,275.02 and 76,915.17 is: 106,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,649.76 : 180,275.02 = 76,915.17 : x
  2. Step 2: Convert to fraction form
    130,649.76/180,275.02 = 76,915.17/x
  3. Step 3: Cross multiply
    130,649.76x = 180,275.02 × 76,915.17
  4. Step 4: Simplify right side
    130,649.76x = 13,865,883,617.77
  5. Step 5: Solve for x
    x = 13,865,883,617.77/130,649.76
  6. Step 6: Final answer
    x = 106,130.19

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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.