Home / 156,779.40-216,373.52-87,887.47

Finding the Fourth Proportional to 156,779.40, 216,373.52 and 87,887.47

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Solution

The fourth proportional to 156,779.40, 216,373.52 and 87,887.47 is: 121,294.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,779.40 : 216,373.52 = 87,887.47 : x
  2. Step 2: Convert to fraction form
    156,779.40/216,373.52 = 87,887.47/x
  3. Step 3: Cross multiply
    156,779.40x = 216,373.52 × 87,887.47
  4. Step 4: Simplify right side
    156,779.40x = 19,016,521,247.79
  5. Step 5: Solve for x
    x = 19,016,521,247.79/156,779.40
  6. Step 6: Final answer
    x = 121,294.77

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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.