Home / 130,527.71-180,117.05-72,386.32

Finding the Fourth Proportional to 130,527.71, 180,117.05 and 72,386.32

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Solution

The fourth proportional to 130,527.71, 180,117.05 and 72,386.32 is: 99,886.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,527.71 : 180,117.05 = 72,386.32 : x
  2. Step 2: Convert to fraction form
    130,527.71/180,117.05 = 72,386.32/x
  3. Step 3: Cross multiply
    130,527.71x = 180,117.05 × 72,386.32
  4. Step 4: Simplify right side
    130,527.71x = 13,038,009,156.24
  5. Step 5: Solve for x
    x = 13,038,009,156.24/130,527.71
  6. Step 6: Final answer
    x = 99,886.91

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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.